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Linear Wave Dynamics Explains Observations Attributed to Dark Solitons in a Polariton Quantum Fluid
We investigate the propagation and scattering of polaritons in a planar GaAs microcavity in the linear regime under resonant …
P. Cilibrizzi
,
H. Ohadi
,
T. Ostatnicky
,
A. Askitopoulos
,
W. Langbein
,
P. Lagoudakis
PDF
DOI
Polariton condensation in an optically induced two-dimensional potential
We demonstrate experimentally the condensation of exciton polaritons through optical trapping. The nonresonant pump profile is shaped …
A. Askitopoulos
,
H. Ohadi
,
A. V. Kavokin
,
Z. Hatzopoulos
,
P. G. Savvidis
,
P. G. Lagoudakis
PDF
DOI
Crossover from photon to exciton-polariton lasing
We report on a real-time observation of the crossover between photon and exciton-polariton lasing in a semiconductor microcavity. Both …
Elena Kammann
,
Hamid Ohadi
,
Maria Maragkou
,
Alexey V. Kavokin
,
Pavlos G. Lagoudakis
PDF
DOI
Nonlinear Optical Spin Hall Effect and Long-Range Spin Transport in Polariton Lasers
We report on the experimental observation of the nonlinear analogue of the optical spin Hall effect under highly nonresonant circularly …
E. Kammann
,
T. C. H. Liew
,
H. Ohadi
,
P. Cilibrizzi
,
P. Tsotsis
,
Z. Hatzopoulos
,
P. G. Savvidis
,
A. V. Kavokin
,
P. G. Lagoudakis
PDF
DOI
Spontaneous Symmetry Breaking in a Polariton and Photon Laser
We report on the simultaneous observation of spontaneous symmetry breaking and long-range spatial coherence both in the strong- and the …
H. Ohadi
,
E. Kammann
,
T. C. H. Liew
,
K. G. Lagoudakis
,
A. V. Kavokin
,
P. G. Lagoudakis
PDF
DOI
Hänsch–Couillaud locking of Mach?Zehnder interferometer for carrier removal from a phase-modulated optical spectrum
We describe and analyze the operation and stabilization of a Mach–Zehnder interferometer, which separates the carrier and the …
J. E. Bateman
,
R. L. D. Murray
,
M. Himsworth
,
H. Ohadi
,
A. Xuereb
,
T. Freegarde
PDF
DOI
Magneto-optical trapping and background-free imaging for atoms near nanostructured surfaces
We demonstrate a combined magneto-optical trap and imaging system that is suitable for the investigation of cold atoms near surfaces. …
Hamid Ohadi
,
Matthew Himsworth
,
Andre Xuereb
,
Tim Freegarde
PDF
DOI
Dynamics of axialized laser-cooled ions in a Penning trap
We report the experimental characterization of axialization—a method of reducing the magnetron motion of a small number of ions stored …
E. S. Phillips
,
R. J. Hendricks
,
A. M. Abdulla
,
H. Ohadi
,
D. R. Crick
,
K. Koo
,
D. M. Segal
,
R. C. Thompson
PDF
DOI
Two-ion Coulomb crystals of Ca+ in a Penning trap
Results demonstrating laser cooling and observation of individual calcium ions in a Penning trap are presented. We show that we are …
D. R. Crick
,
H. Ohadi
,
I. Bhatti
,
R. C. Thompson
,
D. M. Segal
PDF
DOI
Novel designs for Penning ion traps
A number of alternative designs are presented for Penning ion traps suitable for quantum information processing (QIP) applications with …
J. R. Castrejón-Pita
,
H. Ohadi
,
D. R. Crick
,
D. F. A. Winters
,
D. M. Segal
,
R. C. Thompson
PDF
DOI
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